Act as an experienced writing teacher. Create 15 creative writing prompts for {{student_group}} writing in {{writing_language}} at {{proficiency_level}} level, connected to this unit or theme: {{unit_theme}}. Mix the types: five story starters, three prompts built around an everyday object, three personal narrative prompts that do not require sharing private information, two poetry prompts, and two playful constraint prompts, such as a story in exactly 50 words. For each prompt, add a suggested time, a length target, and one vocabulary or grammar focus that suits the level. Make every prompt age-appropriate and answerable by students from any cultural background. End with a simple four-point rubric that rewards ideas and voice, not only accuracy.